TNR-i iPad Tenori-On And Other Yamaha Apps

The TNR-i seems like the most obvious candidate here - a perfect match for iPad technology. In some ways more easy to use than the original Tenori-On which caused quite a stir when it was released (pre iPad). There's also some MIDI control apps which can pair up with Yamaha's new iPhone/iPad MIDI connection kit the i-MX1 (price TBC) or presumably Line6 MIDI Mobilizer or any other Core MIDI compatible device.